Tiny optimization in internal_id_rescore().
Tiny optimization in internal_id_rescore().

at7/ensembl,willmclaren/ensembl,at7/ensembl,mjg17/ensembl,Ensembl/ensembl,mjg17/ensembl,danstaines/ensembl,at7/ensembl,at7/ensembl,Ensembl/ensembl,muffato/ensembl,james-monkeyshines/ensembl,danstaines/ensembl,james-monkeyshines/ensembl,muffato/ensembl,danstaines/ensembl,muffato/ensembl,Ensembl/ensembl,mjg17/ensembl,muffato/ensembl,Ensembl/ensembl,mjg17/ensembl,james-monkeyshines/ensembl,willmclaren/ensembl,james-monkeyshines/ensembl